EP3134631A1 - Vanne de circulation de fluide - Google Patents
Vanne de circulation de fluideInfo
- Publication number
- EP3134631A1 EP3134631A1 EP15725784.1A EP15725784A EP3134631A1 EP 3134631 A1 EP3134631 A1 EP 3134631A1 EP 15725784 A EP15725784 A EP 15725784A EP 3134631 A1 EP3134631 A1 EP 3134631A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- valve
- valve according
- drive member
- slot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1035—Details of the valve housing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1065—Mechanical control linkage between an actuator and the flap, e.g. including levers, gears, springs, clutches, limit stops of the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/107—Manufacturing or mounting details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/72—Housings
Definitions
- the present invention relates to a fluid circulation valve, and more specifically to a fluid circulation valve for a motor vehicle.
- actuators and for example actuators of fluid circulation valves, operating in a reversible kinematics.
- These actuators or control shafts use as a return element in their equilibrium position a return spring connected to a toothed sector or a gear wheel.
- This spring comprises a fixed end, which abuts in a slot or a stud, and a movable end connected to the toothed sector or the toothed wheel.
- the least cumbersome, hooked return spring is to accommodate the movable end of the spring in an asymmetric slot with a lug.
- the shape of the end of the spring and the geometry of the slot provide the necessary captive function when mounting the actuator in the body of the valve.
- Another solution is to use a lug on the toothed sector or the toothed wheel. This lug serves as a captive function. The attachment of the movable end of the spring is then on a stop.
- the present invention proposes a fluid circulation valve comprising a body having a fluid passage duct, a shutter shutter of the duct, an actuator of the flap, the actuator being free to rotate and comprising a return spring, an element driving a rotation of the actuator, and a radial stop means of a first end of the spring, the valve comprising at least one means for hanging from a second end of the spring of the spring, the hooking means being configured to receive the second end of the spring in a clockwise or counterclockwise direction of the drive member.
- the invention thus has the advantage of allowing the use of the control shaft in both directions of rotation, both clockwise and counterclockwise.
- the hooking means is formed by a symmetrical slot.
- the hooking means is configured to match the shape of the spring.
- the hooking means comprises a non-return means.
- the anti-return means is a lug.
- the non-return means is disposed inside the hooking means.
- the valve comprises two spring positioning means.
- the two positioning means are positioned symmetrically on either side of the slot, inside the drive member. According to one embodiment of the invention, the two positioning means are formed by two pads.
- the pads are arranged to form between them an angle of between 150 and 180 degrees.
- the invention also relates to a motor vehicle comprising a valve according to the invention.
- FIG. 1 is an axial sectional view of an exemplary embodiment of a fluid circulation valve according to the invention.
- FIG. 2 is a perspective view of the assembly of the control shaft and of the drive member of the valve of FIG. 1,
- FIG. 3 is a view from above of a part of the valve comprising the hooking system according to the invention, a) in a clockwise direction of rotation, b) in a counterclockwise direction of rotation,
- FIG. 4 is a detailed view of the hanging system according to the invention
- FIG. 5 is a view from above of a part of the valve showing the two positioning studs according to the invention.
- the invention relates to a fluid circulation valve, in particular for a motor vehicle.
- This is a valve for adjusting the intake gas flow of a heat engine, in particular a metering valve for a diesel engine.
- the valve is a valve well known to those skilled in the art and is for example such as that described in the patent application FR2992046.
- the valve comprises a body 2 inside which is formed a conduit 3 for circulating the fluid.
- the body 2 is here intended to be mounted, via connectors, on an engine intake line so that the part of the gases flowing in this branch passes through the duct and is directed towards the engine to participate in the combustion.
- the connections and the intake line have not been shown, being well known in themselves.
- control shaft 4 In the body 2 of the valve 1, are received a control shaft 4, free in rotation with, integral with it, a flap 5 for closing the duct 3 according to the angular position of the control shaft 4, as illustrated by the arrow 20 rotating about the longitudinal axis A of the control shaft 4.
- control shaft 4 is connected in rotation to the shutter 5 by fasteners 14, here for example a screw-nut system, or the like, which allows the shutter to be able to turn with the shaft between two extreme positions.
- fasteners 14 here for example a screw-nut system, or the like, which allows the shutter to be able to turn with the shaft between two extreme positions.
- One of the fully open positions, as in FIG. 1, lets the fluid pass, and the other, not shown, blocks its passage, the shutter then being applied against the lateral wall of the duct 3.
- the valve comprises connecting means 6, 7 pivot between said body 2 and said control shaft 4.
- the control shaft 4 can thus pivot freely about the axis A, by a sliding adjustment provided between the shaft and the connecting means.
- the end of the shaft, referred to as upper 12 opens outwardly of the body 2 of the valve 1 to be connected to a drive member 21 in rotation of said control shaft 4.
- the driving member 21 is, for example, a toothed sector 22 comprising a central portion 24 centered on the control shaft 4 and a radial protrusion 26, forming a sector of angle slightly greater than the angular displacement of the flap and provided with gear teeth 28.
- the toothed sector 22 is here rotatably connected to a return wheel 30 free in rotation with respect to the body 2 about an axis of articulation 32 parallel to the longitudinal axis A of the control shaft 4.
- the valve comprises an electric motor, not shown, in particular a stepping motor.
- the electric motor meshes with a large pinion 36 of the idler wheel 30 while the toothed sector 22 meshes with a small pinion 37 of the latter.
- the actuation of the motor thus causes a rotation of the return wheel 30 which in turn causes rotation of the toothed sector 22 and therefore of the flap 5 via the control shaft 4.
- the drive member 21, the intermediate wheel 30 and / or said motor are positioned in a housing 38 of the valve closed by a cover 40.
- the drive member 21 is overmolded on the control shaft 4. This overmolding ensures a connection without play between these two bodies. It is thus possible to pre-assemble them before mounting in the body 2.
- the drive member 21 is, for example, plastic material and / or the control shaft is, for example, metal, especially stainless steel.
- the valve comprises a sensor target 66. It is, for example, a flat magnet described in the application FR2992046.
- the valve comprises at least one return spring 42 for positioning the flap 5 in a rest position, here an open position. By position of rest, one hears a position taken when the motor of the valve is not actuated.
- a first end 421 of the spring 42 is supported on the body 2, and a second end 422 of the spring is housed in a hooking means 46 of the drive member 21, illustrated in Figures 2 to 5.
- the spring 42 is centered, in particular, on the longitudinal axis A.
- the first end 421 of the spring 42 is thus supported on the body 2 of the valve.
- This first end 421 is also called a fixed end by opposed to the second end 422 which is driven by the drive member 21. Indeed, this first end 421 of the spring 42 is not rotated by the drive member 21.
- the first end 421 of the spring 42 is pressed against a radial stop means 423 of the body 2.
- This stop means 423 is fixed or formed directly in the body of the valve 2.
- this stop means 423 is a stop against which the first end 421 of the spring 42 abuts.
- this stop means 423 is a slot, not shown, in which the first end 421 of the spring 42 is inserted.
- This stop means 423 is configured to receive the first end 421 of the spring regardless of the direction of rotation in which the spring 42 is driven. More specifically, the stop means 423 makes it possible to stop the first end 421 of the spring 42. when the spring is rotated in a clockwise or counterclockwise direction.
- the hooking means 46 is formed by a slot 46.
- This slot 46 accommodating the second end 422 of the spring 42 passes axially through the wall 50 of the drive member 21.
- the slot 46 is oriented, for example, along a corner sector, centered on the longitudinal axis A of the shaft 4.
- the slot 46 allows a latching position of the second end of the spring at each of its ends. More specifically, the slot 46 according to the invention is symmetrical. Thus whatever the direction of rotation of the drive member 21, and thus of the spring 42, the slot allows the hooking of the second end 421 of the spring 42.
- the hooking means 46 is configured to match the shape of the spring 42. More specifically, the ends 461, 462 of the hooking means 46 are hollow and rounded.
- the hooking means thus has a captive function for hanging the spring when moving and to retain it.
- the hooking means 46 comprises a non-return means 463.
- the non-return means 463 is a lug.
- This non-return means 463 is disposed inside the hooking means 46. More specifically, the lug 463 is disposed in the slot 46, on the wall situated towards the inside of the driving member 21 according to a radial plane.
- This lug thus retains the end of the spring in the slot. When inserted into the slot, the spring is blocked and can not go back, or with difficulty.
- the toothed sector comprises two positioning means 471, 472 of the spring 42 illustrated in FIG.
- These two positioning means 471, 472 are positioned symmetrically on either side of the slot 46, inside the toothed sector, ie towards the inside of the valve, towards the flap 5 of the valve.
- the two positioning means 471, 472 are formed by two pads.
- the pads are arranged to form between them an angle ⁇ of between 150 and 180 degrees, and preferably equal to 160 degrees.
- the valve according to the invention comprises a plate 54, in particular a metal plate, defining at least a first radial abutment 56, (FIG. 2) delimiting an angular stroke of the drive member 21. More specifically, the plate 54 is linked in rotation to the control shaft 4 and overmolded by the drive member 21. In the extreme angular positions of the valve, the radial stop 56 comes into contact with an angular stop stop not shown.
- the drive member comprises a second radial abutment 56 'visible in FIG.
- the first end 421 of the spring 42 is supported on the stop means 423.
- the second end 422 of the spring 42 is then picked up by the hook means 46 and bears on the end 461 of the slot opposite to the direction of the direction of rotation.
- the first turn of the spring then bears on the positioning pin 472 disposed after the slot 46 relative to the direction of rotation.
- the drive member 21 then abuts against an angular stop by means of a radial abutment.
- Such a valve is more particularly intended for applications as an intake gas metering valve of internal combustion engines, whether gasoline or diesel. It also finds its applications as an exhaust gas recirculation valve or EGR valve (for Exhaust Gas Recirculation according to English terminology). Other applications of the valve according to the invention are also possible without departing from the scope of the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Mechanically-Actuated Valves (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Lift Valve (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1453604A FR3020111B1 (fr) | 2014-04-22 | 2014-04-22 | Vanne de circulation de fluide |
PCT/FR2015/051096 WO2015162381A1 (fr) | 2014-04-22 | 2015-04-22 | Vanne de circulation de fluide |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3134631A1 true EP3134631A1 (fr) | 2017-03-01 |
EP3134631B1 EP3134631B1 (fr) | 2018-07-25 |
Family
ID=50933407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15725784.1A Active EP3134631B1 (fr) | 2014-04-22 | 2015-04-22 | Vanne de circulation de fluide |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3134631B1 (fr) |
CN (1) | CN106471234B (fr) |
FR (1) | FR3020111B1 (fr) |
WO (1) | WO2015162381A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA3125906C (fr) | 2019-01-15 | 2024-01-02 | Shanghai Auzone Auto Parts Manufacturing Co., Ltd | Mecanisme de reinitialisation pour corps d'accelerateur electronique |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0684728B2 (ja) * | 1990-11-29 | 1994-10-26 | 三菱電機株式会社 | 内燃機関のスロットル弁開閉装置 |
US6918401B1 (en) * | 1999-09-08 | 2005-07-19 | Siemens Canada Limited | Throttle shaft assembly and method of attachment |
ITBO20030531A1 (it) * | 2003-09-15 | 2005-03-16 | Magneti Marelli Powertrain Spa | Valvola a farfalla a controllo elettronico provvista di |
JP4457038B2 (ja) * | 2005-04-14 | 2010-04-28 | 日立オートモティブシステムズ株式会社 | 内燃機関のモータ駆動式絞り弁制御装置 |
JP5180167B2 (ja) * | 2009-09-04 | 2013-04-10 | 愛三工業株式会社 | 樹脂歯車及びスロットル装置 |
FR2992046B1 (fr) | 2012-06-15 | 2015-05-01 | Valeo Sys Controle Moteur Sas | Vanne de circulation de fluide, notamment pour vehicule automobile |
-
2014
- 2014-04-22 FR FR1453604A patent/FR3020111B1/fr active Active
-
2015
- 2015-04-22 EP EP15725784.1A patent/EP3134631B1/fr active Active
- 2015-04-22 WO PCT/FR2015/051096 patent/WO2015162381A1/fr active Application Filing
- 2015-04-22 CN CN201580033001.9A patent/CN106471234B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
FR3020111A1 (fr) | 2015-10-23 |
EP3134631B1 (fr) | 2018-07-25 |
FR3020111B1 (fr) | 2017-01-27 |
CN106471234B (zh) | 2020-09-22 |
WO2015162381A1 (fr) | 2015-10-29 |
CN106471234A (zh) | 2017-03-01 |
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